Spark-arrester.



No. 655,825. Patented Aug. |4,- 900. A. J. HAEBLER.

SPARK ARRESTEB.

(Application filed Mar. 26, 1900.)

(No Model.)

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ANTON J. HAEBLER, OF BALTIMORE, MARYLAND, ASSICNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF THIRTY-ONE SEVENTY-FIFTHS TO PETER H. THUMLERT, THOMAS MACKENZIE, AND HENRY C. CLOVER, OF SAME PLACE.

SPARK-ARRESTER- SPECIFICATION forming part of Letters Patent No. 655,825, dated August 14, 1900.

Application filed March 26,1900. Serial No. 10,270. (No model.)

T at whom it may concern:

Be it known that I, ANTON J. HAEBLER, of the city of Baltimore, in the State of Maryland, have invented certain Improvements in Spark-Arresters, of which the following is a specification.

In the description of the said invention which follows reference is made to the accom panying drawings, forming a part hereof,

which illustrate the application of the invention to a locomotive-boiler, one of the many uses to which the invention is adapted.

Figure l is a sectional View of the smokebox of a locomotive-boiler embodying the I 5 presentinvention, the section being taken on the dotted line w m, Fig. 2. Fig. 2 is an exterior side view. Fig. 3 is a cross-section of Fig. 1, taken on the dotted line y y.

Referring now to the drawings, A is the smoke-box of a locomotive-boiler, and B the smoke-stack, the upper end of which is outwardly flared, as shown in Fig. 1, for a purpose hereinafter described.

C is a casing or jacket placed around the smoke'stack, whereby there is formed an annular space or pocket D to receive cinders thrown up by the exhaust-steam from the engine-cylinders. (Not shown.) This annular space is divided by the partition-plates 1) into the semi-annular spaces a. Each of the semiannular spaces a is in communication with a conduit E, situated exteriorly of the boiler and extending rearward in an inclined posi-.

tion. The two conduits unite at a point underneath of the smokebox and centrally thereof and have a common outlet F for cinders.

Curved deflecting-plates G, attached to the division or partition plates I), serve to guide the falling cinders to the cinder-conduits E.

H H are the exhaust-steam pipes leading from the engine-cylinders, (not shown,) terminating in a central vertical exhaust-pipe I.

J is a cylindrical screen constructed, preferably, in the main of wirework, extending from the central exhaust-pipe I, to which it is clamped, through the head (1 of the jacket C. This screen is by preference formed in three sections of different diameters, the largest one being at the top and the smallest one at the bottom or where it connects with the central exhaust-pipe I, and the mesh of the wirework is largest at the top and smallest at the bottom, as shown, for a purpose herein after described. The screen allows of the free v passage of the exhaust-steam to the smokestack, and the portion of the steam which passes through the wall of the screen serves to carry the cinders from the smoke=stack to the semi-annular spaces at around the same, in which they fall to the deflecting-plates G and are by them guided to the inclined cinder-conduits E, from which they escape by means of the outlet-opening F underneath the boiler.

It will be understood that the screen J, notwithstanding that its Wall is foraminous, is a continuation of the main exhaust-pipe I and differs only from ,it, in effect, in that there is a lateral, as well as a longitudinal, escape for steam therefrom. It follows, therefore, that there is a tendency to a greater steam pressure at. the bottom of the screen or Where it adjoins the main exhaust-pipe than at the top, where the steam escapes directly into the atmosphere. I therefore fa'cilitatethe lateral escape of steam toward the top of the screen by increasing the size of the mesh of the wirework from which the screen is made, and instead of the current of exhaust-steam passing upward through the stack B in a succession of well-defined puffs there is a comparatively-even flow, which is better adapted to carry off the cinders from the smoke-box of the boiler.

The cinders are guided as they issue from the smoke-stack to the semi-annular spaces Ct by means of the flared sheet-metal portion f of the screen and the deflecting-plates K.

The operation of the invention is as follows:'Cinders entering the smoke-box from the boiler-tubes (not shown) are carried up ward by the force of the exhaust-steam es capin g from the central exhaust-pipe and, striking the top deflecting-plates K,are turned downward into the semi-annular spaces a, through which they fall by the force of. gravity, aided somewhat by a slight steam-pres- 1. In combination with a smoke-box, a

smoke-stack, and a steam-pipe leading to the said smoke-stack, a cinder-pocket, a cinderconduit leading from the cinder-pocket, and a wirework screen which surrounds the end of the steam-pipe, the mesh of the wirework increasing in size toward the top of the screen, substantially as specified.

2. In combination with the smoke-box of a locomotive-boiler, its smoke-stack, and the central exhaust-"steam pipe leading from the engine-cylinders, a jacket placed around the said smoke-stack to form a cinder-pocket, a cinder-conduit leading fromthe cinder-pocket to a point underneath the boiler, and a wirework screen which extends from the central exhaust-pipethrough the head of the jacket, the mesh of the wirework increasing in size toward thetop of the screen, substantially as specified.

3. In combination with the smoke-box of a locomotive-boiler,a smoke-stack and a steampipe leading to the said smoke-stack, a cinder-pocket, a cinder-conduit leading from the pocket, and a screen which surrounds the end of the steam-pipe, the portion of the said screen which is surrounded by the smokestack consisting of wirework in sections connected by a flared or conoidal deflectingplate, substantially as, and for the purpose specified.

ANTON J. I-IAEBLER.

Witnesses:

THOMAS MACKENZIE, H. B. DOWELL. 

